Ozonizer.



E. C. SPUR'GE, DEW-D.

L. 'I'. sPUBGL, G. L. cox c1 s. sLATL, In.. ADIIINIsTmTons.

OZONIZER.

APPLICATION FILED JULY I7, 1912.

Patented Aug. 26, 1913.

2 SHEETS-SHEET 1.

y 11,". 60 ,a W77 agli/batman ms E. c. SPURGE, DEG'D. L. T. SPUBGE, G. E. 00X t G. SLATE, 18 ADHINIBTBATOES.

OZONIZER. APPLIUATIOH FILED JULY 17. 1912.

Patented Aug. 26, 1913.

2 SIEBTB-BHEET 2.

of air or bubbles which tend to form when the plates are being pressed together; the reason for this being that if air is present it tends to expand when heated, and otherwise results deleteriously to the apparatus in several ways, as for example, by corroding the electrode.

Especial attention is also directed to the fact that the dielectrics and electrode 11, in ett'ect, constitute a unitary structure, since when the apparatus is opened they are removed or replaced as a unit. Spacers -12 separate the dielectrics from the adjacent walls 9 of the water'cooled electrodes. As best shown in Fig. 1, these spacers may be simple strips, preferably of insulating material, such as micanite, mica, or glass, which are cemented or otherwise secured to the outer surfaces of the dielectrics So that these spacers also constitute parts of the unitary structure above referred to. The spacing strips .12 may be disposed on the diagonals of the preferably square dielectrics; but, as shown in Fig. 1, do not extend quite to the center thereof in order to provide sufficient space between their interior extremities to permit the ozone to flow freely out into the collecting conduits 13 provided therefor in the water-cooled electrodes. As indicated in Fig. 4 suitable pipes 14 may be tapped into or otherwise secured to the mouths ot' these conduits whereby to convey away the collected ozone; and it will be noted that the ozone conduits are disposed, in the preferred form of the device, substantially centrally of the electrodes.

In order to hold the dielectrics against lateral displacement when in position between the hollow electrodes, insulating blocks 15 may be provided upon either Side of the dielectrics and at the bottom thereof;

these blocks being secured to the casing 2 byl means of screws 16.

Preferably near the top of one of the casings, to wit, that designated 2, is an aperture 17 adapted for the reception of the stem of an insulating headed or shouldered bushing 1S. Secured lwithin the latter is a. glass tube 19 filled with insulating material 20, embedded in which latter is a cone ductivc rod 21. Rod 21 constitutes the binding-post for the electrode 11, the outer extremity thereof being provided with nuts 22 between which may be clamped a lead 23 i' rom the transformer or other source of high potential current used. The inner extremity of the rod 21 is correspondingly threaded and provided with nuts 24, between which may be `ecured the extremity of a pig-tail 25, of tine wires, which extends out between the dielectrics from the electrode 11.

The water, wherebyy the grounded electrodes are cooled, may be led in from a pipe 26 through thc corresponding conduit 6 into the chamber 3 of the casing 1, thence out owing to the severe electric through a conduit 6 opposite that through which the water enters, through the pipe 4, to the opposite electrode; emerging from the chamber 3 of the latter via an exit pipe 27. The pipes 26, 27 may be connected to the casing by means of .suitable bushings 28, and t'or convenience of construction, four bosses or lugs 29 (within which'are disposed the conduits or recesses 6) are provided in each casing part 1, 2; those conduits or recesses not used being closed at their outer extremities by plugs 30. The flanges 7 of the respective halves of the casing are sepf arably held together by Screws 31, or the like. The insulating stud 18 Iis secured in place by a single nut 32, the removalof which, after the casing has been opened, permits of the immediate withdrawal of the binding post and its associated arts through the aperture 17, and since the dielectrics are merely loosely held between the walls 9 with their respective edges in engagement With the insulating blocks 0r supports 15, the combined dielectrics and electrode together, it desired, with the terminal of the latter,

may be freely and readily removed from the apparatus. The construction whereby this is made possible is oit very great importance, since in operation, despite the cooling action exerted upon the dielectrics in the manner hereinafter described, such parts are occasionally subject to puncture or rupture stresses imposed thereon; in which event, of course, it is desirable to effect the removal of the injured parts with the utmost facility. Even one unskilled in the art and having but rudimentary mechanical knowledge or skill may replace a broken down dielectric by merely unscrewing screws,31, which permits of the separation of the casing halves and then loosening nuts 24. This loosens theV wires connecting with the high tension electrode and makes it possible to litt the dielectric unit out. A new dielectric unit may then be inserted, the old terminal being again utilized. if desired.

Both ot the cooled electrodes are grounded, indicated at 33, and the ozone pipes 14 being screwed thereinto, are also grounded. It is to be observed that the arrangement of parts employed is such as to substantially completely inclose the electrode 11 and the parts in electrical communication therewith.

The ozonizer casing may be mounted direct-ly upon the top or side of a casing 34 within which may be disposed the transformer, if the latter be the source of current employed, in which case even the outer end of the terminal is so inelosed as to render inadvertent contacttherewith impossible. It has not been thought necessary to indicate the transformer or connections therefrom, since the casingt has been gard as of particular importance.

characterized in the drawings by the words transformer casing.

Bewoner-I especially desire to direct attention to the following points which I reln my construction, the electrode l1 is herinetically sealed between two sheets of dielectric ma terial and is removable therewith from the casing as a unit. Each grounded electrode is water-cooled, whereas the other electrode is cooled by radiation, whereby to reduce the likelihood of short-circuiting. The two dielectrics are not directly cooled and do carry no conducting material on their exterior surfaces, but instead have the electrode cemented or sealed between their interior surfaces. No air space is provided between the dielectrics and the electrode bctween them. Ozone is generated only in the spaces between the exterior surfaces of the dielectrics and the adjacent watencooled electrodes. The ozone as generated is collected and drawn olf through the centraily disposed conduits 13. If desired, air .aiay be admit-ted through one conduit 13; the ozonized air or ozone being drawn o from the other of these centrally disposed conduits. VWhen the apparatus is used in this fashion, the air is subjected to the action oi' the electric discharge first upon one side of the dielectric unit and then on the other side ot the saine. Air may also be admitted through an opening in the casing, directly to the channel 3G provided around the water boxes or chambers 3, in which case the ozone may be drawn otf through both of the pipes 14. The advantage of the channeled formation of the casing is that in any case it tends to promote an equable iiow of air over the dielectrics. Finally. it should be mentioned that by making the electrode l1. of 'very thin foil, as for example of one thousandth ot an inch in thickness, the liability ot the dielectrics to become loosened therefrom due to expansion and contraction of the metal, is substantially eliminated; while eren though this metal be of such extreme thinness, there is practically no chance for it to be injured or destroyed by the acid or acids usually present in the vicinity of high tension discharges through air, since no air is in Contact with the faces of the foil.

Even dry air will oxidize an electrode ot the type in question if permitted to come in contact therewith during the electric discharge, and moist air is usually most deleterious. The casing of the ozonizer being of castmetal, and its construction such as to be easily made air tight, allows the use of dried air, which is Very. beneficial, either under a pressure as great or greater, or less than that of the atmosphere. lt also easily permits pure oxygen or other gases being submitted to the electric discharge.

Having described my invention, I claim:

l. The ozonizer which coinprisesa separable casing the parts of which are hollow and constitute one of the electrodes of the ozonizer, connections to said casingfor passing water through said hollow parts` a unitary structure consisting of another electrode sealed in between dielectrics. portions, at least, of said dielectrics being spaced from said casing parts to provide' an air space within which the ozone may be generated. and means for conducting ozone from said casing.

2. An ozonizer comprising a two-partcasing constituting one electrode, in combination with a unitary structure consisting ot' two dielectrics and an electrode bet-Ween them,v the unitary structure being clamped between the parts of the Casing in a manner 'to provide discharge gaps on each side of the unitary structure.

ln witness whereof, I subscribe my signature, in the, presence ot' two witnesses.

, EUWARD CHARLES SPURGE.

Witnesses J. FrrzrA'rRIcK, GEORGE BAssnT'r. 

